My son just traded his PS5 to a new Xbox, after trading the new Xbox 5 months ago for the PS5. He's a work in progress...anyway, we put a 1tb PCIE 4.0 M.2 in PS5 as there wasn't enough room for even half of his games..so i scored that for my PC.
So yesterday i cloned my C drive, 465GB, to to the M.2, 21 minutes and i was up and running, played a few games to make sure it was all sweet, opened and edited some raw images just to see how much quicker it is, a lot. Very impressed, and so easy.
I am very happy with the speed.
I am running my PC with only 2 M.2`s now.
I still have my old box. If I need an "ordinary" HD I think I will move them into my new one.